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cgImage conflict with device [message #91036]

Wed, 27 May 2015 04:14

amin farhang
Messages: 39
Registered: November 2010

Member

Dear all,

I want to save an image with cgImage as eps. But when I use missing_value keyword to save the output a conflict appear between cgImage and device:

For instance, in the following example everything goes well:

filename = FILEPATH(SUBDIR=['examples','data'], 'worldelv.dat')
image = BYTARR(360,360)
OPENR, lun, filename, /GET_LUN
READU, lun, image
FREE_LUN, lun
cgLoadCT, 33,Ncolors=254, RGB_TABLE=palette, bottom=1
cgImage, image, Missing_Value=-32767, Missing_Color='white', PALETTE=palette

But when I try to save output the error appear:

set_plot,'ps'
Device,filename = 'density.eps',/Color, /encapsulated, xsize=18, ysize=14
cgImage, image, Missing_Value=-32767, Missing_Color='white', PALETTE=palette

ERROR:
% CGIMAGE: An AlphaBackgroundImage is required to create transparent images in PostScript.
% Execution halted at: CGIMAGE 1529

How can I solve this?

Best,
AMIN

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[Message index]

		cgImage conflict with device By: amin farhang on Wed, 27 May 2015 04:14
		Re: cgImage conflict with device By: David Fanning on Wed, 27 May 2015 05:03

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